Unrolling device.



iran STATES 'PATENT oinaicii.Y

SIMON W. WARDWELL AND CLAES RYpEN, or PRoviDENoE, RHODE ISLAND.

UimoLnING DEVICE.

To all whom it may concern:

Be it knoWn that We,SiMoN.'W.' 'lV/ARD- WELL and CLAES RYDEN, citizens of the United States, residing at Providence, in the county of Providence and State of. Rhode Island, have invented certain new and useful Improvements in Unrolling Devices, of which the follow-ing is a specification.

Our invention relates to controlling devices for regula'ting the delivery of thread, yarn or other similar materials in unrolling theI Same? from Vrotating Supplies suchas spools or bobbins.

The purpose of our im rovenient is -to provide means'.A forcoiitrolling therotation of the spool or bobbin to neutralize the shock of the Sudden pull on the thread in Starting the delivery, and to prevent the Spool from overruiniing when the thread breaks or its draft is arrested; so that tine, delicate materials may be delivered at high speed with an even Vtension and without undue Strain or breakage.

' `'Our invention is particularly adapted for use with winding machines and includes devices for automatically controlling the sto Figure 1 is a longitudinal elevation of the device, with the bracket and casing represented in section to show the operating parts therein; Fig. 2, an end view looking'in the direction indicated by the arrow w, Fig. l;

Fig. 3, an 'end view looking in the opposite direction; Fig. 4, a )artsectional view of the spool holding spi-nd e; Fig. 5, a detail of the saine. v i j Referrin to Fig. 1, a represents a dead spindle hel in bearings in the bracket b and sup orting a rotatable sleeve o adapted to hold) the spool s, shown by dash lines, on which the thread is wound. The bracket b 'coin rises an arm b2 adapted to be secured to the rame of the machine to which the device is applied, and a casing b3. which incloses the operating part-s of the device. The casing b3 'is formed' with a cylindrical hood .b4 which 'projects out overt-he inner flange of the s ool s, to 'exclude dusttand lint from the mec anism. i f I- The spindle aprojects through a bearing' b5 near the front of the casing and itsend a? is reduced in diametei` to formthe Shoulder' Specication of Letters Patent.' AppLication led Taiuary 18, 1909. Serial No. 472,887.

Patented Apr. 26, 1910.

4.2, with the reduced portion entering a bore in the nut d. The'nut d has a cylindrical Aportion cl2 itted to a bore b at the rei'rff the casing b3, and is formed with a luted flange (Z3 which abuts the end of the casing.

The nut d is secured to the spindle a by a .c

spring-pin e driven through a hole at the end()` of the spindle and located in a transverse slotvl* in the face of thenut (See Fig. 3). The Slot al* is preferably formed with a curvedA bottom so that when the pin e is driven through the Spindle it Will be bosvedin, causing it to exert a Spring pressure to hold the nut snugly against the shoulder a` on the spindle. The pin c engages the sides of the slot Z4 to secure the nut rotatively on the spindle, so that the latten may be turned by turning the nut manually for the purpose of adjustment hereafter describd. A longitudinal groove bl is formed along the top of the casing b3 and a Spring wire f is driven into the casing at the end of the groove. The

opposite, free end of the wire f engages with the flutes in the flange d3 of the nut d and `servesas a yielding detent to restrain the nut from accidental tin'ing. When t-he nut is turned by hand the wire f rises up out of the flutes with only a Slight. resistance to its rotation. i

The spindle a is turned down throughout the greater part of its length projecting from the bearing b5 and tlie'sleeve'c bears only on the portion of largest diameter adjacent the hub bg. A plug c2 (see Fig. 4) is Secured in the outer end of the sleeve C, and projecting through its bore for a bearingis a Screw g Screwed into the endl of the spindle a. The plug c: bears against the head of the Screw and the end of the Spindle to locate the sleeve longitudinally on the spindle. At the inner end of the Sleeve c is Secuied a fianged brake-wheel r. The

hub'lz.2 of the brake-wheel is tapered to adapt it to enter the bore in the Spool s and a removable Spring bushing z', Similarly tapered, is fitted to the outer end of the sleeve c.v The bushing z' has a flange or head 2, t0 adapt it to be Vgrasped convcniently'in lthe fingers, and is split at '3 and i* (Fig. 5) with openings i and'i' at the ends of the splits. The splits in the bushing 2'. adapt the two sections to Spread Slightly to allow it to he pushed on to the Sleeve c and when the" tapered end of the bushing` is fni'ced into the bore of the Spool s the two sections are con# l. the spring j is secured tothe spindle by,

tracted to grip the sleeve c. It rbe,

means of a slot a? in the latter which is engaged by the 'hooked extremity jl of the wire. At the other end the wire extends downward in the arm j2 with its end js bent in a .plane parallel to the face of the wheel k. Fastened to the end ja of the arm.

j' is a flexible band la, of leatherv or other suitable material, arranged to wrap around the periphery of the wheel l1, and held inI place by the flanges of the wheel. The free end of the band 7c passes throu h an opening b9 in the casing b3 (see Fig. 2% and secured to it is a wire Z of hair-pin shape having its ends bent 'outward at Z1-Z1. rl'newire is adapted to hold weights m, m, etc., which are provided with central openings through which the ends of the wire project. As the spool s is rotated in the direction of the arrow, Fig. 2, by the draft of the thread, the turning of the wheel I1, causes the band 7c to follow around the periphery of the wheel through the frictional contact caused by the weights wz., m, in the same way as a rope rides on a sheave. The movement of the band 7c is regulated and limited by the arm jz held under tension of the spring j. Preferably the end coil j* of the spring is secured to a bushing o which turns on the spindle a. The bush'ingo is tapered slightly so that the free',l coils cannot bind upon its surface when they contract in being Wound up, and this arrangement gives a free bearing for the' spring without any tendency of its .coils to wrap tightly about the spindle and lessen its resiliency.

The stop device, for connecting the un- `roller to control the stopping of the machine With which it is used, consists of an arm p ada ted to be moved by the arm 7'2 when-the atter swings back vto its initial -'position upon the release of tension on the thread. The arm p is preferably formed ofwire coiled at p2 toprovide a bearing on the hub bs of the bearing b5. The opposite end of the coil extends outward in the arm p8 which is bent at p? to adapt it 'to project through an opening'b10 in the rear end of the hood b4 (see Figs. 2 and 3). At the end ofthe arm p8 is .an eye p'into which is hooked a wire link or connection 7'. The link i .is connected lat its lower end to the usual detent lever which maintains the clutch devices of the winding machine in operative connection. Havingnow explained the construction andarrangement of the parts of our invention the operation ofthe whole device will' next be described. As before explained the bushing i is ref moved from the'fsleeve 0 and the spool of thread or other 'material pushed on to the 75 spindle with its rear. end seated `on the tapered hub h2.

laced on the sleeve c and its tapered end ibrced into the outer end of the spool. The

thread or yarn y is led down to the winding spindle and its end pro erly secured thereto. The parts of the contro ling mechanism will then be in the positions illustrated in Fig. 2. When the windin direction indicated by the arrows, Figs. 2 and 3, and the sleeve c and brake wheel L are rotated with it. As the wheel h starts to rotate the friction of the band 7c upon its periphery causes the band to follow around the Wheel in the same way that abelt rides on a pulley. Under this movement of the band /c the arm jz swings upward,- as shown in Fig. 3, the movement of the arm being con'- trolled and limitedby the spring y'. As Ythe 95 ythe wheel and, therefore, there will be but a slight resistance to the rotation of the spool; but when the draft on the thread is of slower speed the arm f2 will swingv back `under influence of44 its sprin j to give a more extended wrap of the ban around the wheel and, therefore, an increased braking effect, In this way an irregular draft in taking up the thread is compensated for by the automatic control of the braking ing is per lormed.' In w1nding upon a oonical surface,1n`travers1ng the yarn from the large diameter to the small diameter of the 120 be4 taken up at a higher lineal rate when 12'" winding upon the large diameter than when winding upon the small diameter. Under these conditions, if the'braking action on the spool remained constant there would be an irregular tension exertedllon' the delivering 130 The bushing z' is then remachine is started the\ draft. on the threa rotates the spool s in the 85 Vhen the thread y 1s being draw'n`100 eii'ect. This is particularly 115l advantageous 1nA winding shuttle bobbins or cops havin tapered endshon which the windfaster 'than required for a slower draft, and

unless this excessive speed of rotation were checked the spool would run ahead and deliver more thread than could be immediately ,taken up by the winding. After this excess# ive delivery the spool would slow down while the free length was being taken up, and in some cases it might even come to a full sto The next pull on Vthe thread -would t en have to overcome the inertia of the mass, in starting the spool to rotate again, and in this way the tension wouldbe very irregular with the liability of straining and breaking the thread. I With our iniproved device thel tension on the thread 1s maintained uniform by regulating thebraking eiiect on the spool according to the draft on the thread. Further, this is accomplished without the use of controlling or take-up arms moved by the thread itself, which are common to most unrolling devices.

This in'iprovement `obviates the nece'issityy of threading the material through guiding eyes and therefore our device is more convenient to operate, besides relieving the thread of contactwith such eyes, liable to canse abrasion of delicate material like silk and fine yarn. Another advantage of our invention is the regulation of the braking effect in propoi'tion to the variation in the diameter from which the thread is being :1n-

` wound. Innnwinding from a full spool the' vthe latter isnrotating.

speed of rotation will be lessv than in un- Winding from a less diameter at the, barrel of the spool. In our improved device the braking action is4 automatically regulated in proportion to the speed of rotation of the ,spool so that the 'tension of delivery remains constant throughout the :unwinding of the whole spool, notwithstanding the variations in speed of rotation of the spool' caused by the-decrease in diameter of the thread mass.

T he tension of delivery of the thread can be adjustedby regulating the braking action on the wheel l1, through the following described means. By turning the hand-lint (l the spring y' can be wound up to adjust its tension, so that the arm jf is regulated to maintain a greater or less extent of bearing surface of the band on the wheel li when The weights m, m, etc., yare applied to the freevend ofthe baud in proportion to the amount of tension under which the spring j is held, so that the torce ofthe sprin(r will be just enough to over-balance the effect of the weights when the wheel is at rest. As a result of this ar- 'so rangement the arm jt will return toward its lower position as the draft on the thread isv relieved.' Vhcn the thread breaks or is exhau'sted the arm will swingclear back to its imtialposition tocontact. with the arm 0.-

j'lhe contact of lthearmvjvf'f'with the varm p v chine. g

It will be evident that modifications mightf be made in the form and arrangement of parts of the device herein described without departing from the'scope of our invention.

Therefore, without limiting ourselves lto the precise structure and arrangement shown, what we claim is,:

1. In an enrolling-device, the combination with a rotatable holder for the spool, of a brake-wheel rotatable with' the holder, a friction band epvaging said wheel, and means to automatically regulate the extent of ContactA of the band with thewheel acc'ording to thee eed of rotation ofthe spool.

2. In anunrgliiig-devie,-the-combination with a rotatable Ii'g'ilder` for the spools/of a brake-Wheel ifotaabl'nwith the holder, a friction band 'eig-gfaging said wheel,`a1id means to hold the end-s of the band resili ently under tensionfsaid means adapted to regulate the extit of contact of the band with the Wh'eel'according to the speed of rotation of the spool.

3. In an unrolling-device, the combination friction band arranged to partially wrap l around the periphery of thewheel, means tending to cause the band to follow around the wheel when the latter rotates, and resili-A ent means to resist the movement of the band with the wheel.

4. In an unrolling device, the combination with a rotatable holder for the spool, of a brakewheel rotatable with the holder, a flexible, friction band arranged to partially wi ap around the periphery of the wheel, weights suspended at one endof the band, and a spring fastened to the opposite end of the band to allow the band to follow around the Wheel. when the latter rotates to alter the i'io extent of contact of the band with the wheel.

late the exttiit oflcontact of the band with the .wheel, aid means to adjust the tension of each of thil holdin means.

l G. In an unrelling evice, the combination with a rotatable holder for the spool, of a brake-wheel rotatable with the holder, a,

fleiiible, friction band engagin said wheel, weights suspended from one en of the band, an arm secured to thefopposite end of the band, and a spring to controlthe position of i the arm to regulntethe extentrof contact of the band with the wheel bygfallowing the band to move bodily in the direction of rota# tion of tlie wheel.

7. In anl unrolling device, the combination with a rotatable holder for thev spool, of a brake-Wheel rotatable With the holder, a flexible, friction band hung on the periphery of said Wheel, Weights suspended from one end of the band, and a coiled spring formed with an arm having its end secured to the opposite end of the band and arranged to allow the band to move bodily around the Wheel' to remove a portion of its surface from contactowith the Wheel.

-8. In an unrolling-device, the combination with a rotatable holder for the spool of a brake-Wheel rotatable with the holder, a friction band engaging the Wheel, Weights suspended at one end of the band, a coiled spring formed With an arm engaging the opposite end of the band, and means to wind vthe spring up to adjust its tension.

9. In an unrolling-device, the combination With a spindle, of a spool-hold`er rotatable on the spindle, a brake-Wheelrotatable With vthe holder, a friction band engaging the wheel, a coiled spring surrounding the` spindle and secured thereto at one end With ritsopposite end forming an arm fastened to one end of the band, and means to turn the spindle to adjust the-tension of the spring.

10. In an unrolling-device,'the combination with a spindle, of a. spool-holder rotatable on the spindle, a brake-Wheel rota.- table with the holder, a friction band en gaging the Wheel, a'l coiled spring secured vat one end to the spindle and having an arm "and a spring to control the movement ofz the a-IIII.` .f

12. In an unrolling-device, the combination with a bracket b `having a casing b3, of

a spindle a held in a bearing inthe casing,

a s loel-holder c' rotatable on the spindle,`a

bai

ewheel h rotatable with the holder, friction means engaging said wheel., a spring 5 for controlling said means, said s ring coiled around the'spindle and secured t ereto at one end, a' luted nut d fastened to the end ofthe spindle, and a spring detent secured in the casing and engaging the utes of,thenut dt." 13. In an miroll' -dev1ce, the combination with a rotatable nolder for the spool, of

- friction means to control the rotation o; the

holder, devices to. regulate the action of the friction means, and a bracket for the holder i formed with a casing inclosing said regulating devices and a circular hood extending out over the flange of the spool.

14. In an unrolling-device, the combination with a spindle, of a spool-holder rotatable on the' spindle, friction means to control the rotation of.the holder, devicesto regulate the action f said friction means, and a bracket having bearings for the spindle and a casing inclosing the operating devices With a hood surrounding the liange of the spool.

15. In an unrolling-device for Winding or like machines, the combination with a rotatable holder for the spool, of friction means to control the rotation of the holder, an arm to regulate the action of the friction means, said arm ada ted to be moved by the rotation of the'holdlier, a spring to control the movement of the arm, and means to control the operation of the machine, said means adapted to be moved by the arm-When the latter returns to its normal position under action of the spring.

16. In an unrolling-device fory Winding or like machines, the combination with a roltatable holder for the spool, of a ,brake- Wheel rotatable with t-he holder, a friction band engaging said Wheel, an arm connected with the band and inoved by the rotation of the holder, and means connected with the machine to arrest its operation, said means adapted to be engaged by the arm When the latter returns toits rmal position.

17, The combination in an unrolling-device With means to vcontrol the stopping of a machine comprising a pivoted member p connected with t-he machine, of a rotatable spool-holder c, a brake-Wheel L rotatable with the holder, a .friction band k engaging said Wheel, a ivoted arm `7'2 connected with said band andJ adapted to be moved by the latter when the Wheel rotates, and a. spring j i to resist the movement of the arm jz and to cause it Ito engage the member u to stop the machine when the impulse to rotation of the spool is relieved.v

18. The combination inan unrolling-device with means for arresting the operation of a machine, of a rotatable holder. for the spool, a brake-Wheel rotatable with the holder, a friction band engaging the wheel, an arm 7'2 ivoted on the axis of the Wheel with its en secured to the' end of the band, a Asprin to control the position "of thearm rotative y in relation to the Wheel, and a pivoted member p connected to cause the stoppin of theyinachine and adapted to be moved4 y the arm i2 under action of its 19. Theficombination in an unrolling-de- -vice with means to control the stoppling 'of a machine, of a rotatable holder for t espool, a brake-WheelV rotatable with, the holder, a

izo

` friction band engaging said` Wheel;A and de: vices to regulate .the extent of contact of the bandwith the wheel accordinor to the s eed of rotation of the latter, said'evices a 'apte ed tofengage'the stop controlling means, when thedraft on the spool is released.;

.20. The combination 1n an unrollng-de# vice with means t0, 'control thestopping of an ann j? secureolto the end of theihanlfhV and a member pgpiv'oted onfthe 'bearing of' 15. the `spindlev and having o riejarni7 connected with the lmachine uand;alifotlefr alfm adapted to be engaged bythe farmfy'2..'. -f

In testimony Whereof'we affix SIMON W; WARDWELL...

f, 'Witnesse'sz y i ARTHUR I. HARVEY, n *GRACE W. BROWN.

oursignae 'tures.,1n"pre sen'ce' oftwoyvltnesses.. 

